Question

Resolva as Equações com cálculo
A) 2x-9=x+1
B) 17x-1=15x+3
C) 9x-23=13x-27
D) X+X/5=12
E) 5=5/7-3x

Answer 1

Bom dia!!

a) 2x -9 = x+1
2x -x = 1 +9
x = 10

b) 17x -1 = 15x +3
17x -15x = 3 +1
2x = 4
x = 4/2
x = 2

c) 9x -23 = 13x -27
9x -13x = -27 +23
-4x = -4
x = -4/-4
x = 1

d) x +x/5 = 12
5x/5 +x/5 = 12
6x/5 = 12
6x = 12*5
6x = 60
x = 60/6
x = 10

e) 5 = 5/7 -7x
-7x = 5 -5/7
-7x = 35/7 -5/7
-7x = 30/7
x = 30/7 /-7
x = 30/7 *-7
x = -30

Bons estudos!